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Energies
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Emerging Technologies for Waste Biomass to Green Energy and Materials
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Emerging Technologies for Waste Biomass to Green Energy and Materials

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A4: Bio-Energy".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 4199

Special Issue Editors

Dr. Swarnima Agnihotri

E-Mail Website
Guest Editor
Swedish Centre for Resource Recovery, University of Borås, S-50190 Borås, Sweden
Interests: industrial biotechnology; lignocellulosic biomass; pretreatment technologies; pulp and paper technology; waste biorefinery; bioenergy; nutritious fungal food; sustainability
Dr. Juliana Aristéia De Lima

E-Mail Website
Guest Editor
Department of Polymer, Fibre and Composite, RISE Research Institutes of Sweden, Brinellgatan 4, 504 62 Borås, Sweden
Interests: microplastics; plastic degradation and fragmentation; electron microscopy; polymer blends; green materials
Special Issues, Collections and Topics in MDPI journals
Dr. Mihaela Tanase Opedal

E-Mail Website
Guest Editor
RISE, Paper and Fibre Research Institute AS, 7034 Trondheim, Norway
Interests: chemical engineering and biorefinery processes; pretreatment and fractionation of various lignocellulosic biomass feedstocks (forestry and marine based); lignin conversion to value-added products and materials; production of fermentable sugars to protein from lignocellulose biomass; process water chemistry and surface and colloid chemistry with application in pulp and paper industry

Special Issue Information

Dear Colleagues,

The sustainable provision of energy and functional materials is a defining factor in guaranteeing the environmental, economic, and social stability of future societies, and therefore the transition from a rigid linear economy to a circular economy including resource recovery, reuse, and recycling is essential.

The vast volume of waste biomass generated by the agriculture sector, pulp and paper industries, wastewater treatment plants, animal slaughterhouses, animal waste and food industry present serious disposal challenges. As a solution, biomass can be utilized as a low-cost substrate in waste-to-energy (WtE) processes to not only generate renewable energy but also produce valuable materials. The development and implementation of commercially feasible technologies, however, remains a challenge.

This Special Issue of Energies aims to collect original research, reviews, or shorter perspective articles that address the utilization of waste biomass as a resource for a sustainable future. It hence addresses all aspects related to the chemical, thermal, and biological routes for the conversion of different types of waste biomass to green energy and functional materials. Emphasis will be placed on contemporary pretreatment technologies that enable the treatment of recalcitrant lignocellulosic waste and its further conversion to a value-added product, as well as cost-effective processes for the valorization of industrial side streams.

The scope of this Special Issue includes, but is not limited to, the following topics:

  • Pyrolysis
  • Gasification
  • Combustion
  • Anaerobic digestion
  • Pretreatment/fractionation technologies
  • Waste biorefinery
  • Green energy and fuels
  • Volatile fatty acids
  • Deriving value from pulp and paper industry waste (e.g., lignin and waste water)
  • Agroindustry waste applications
  • Waste derived biopolymers
  • Fermentation

Dr. Swarnima Agnihotri
Dr. Juliana Aristéia De Lima
Dr. Mihaela Tanase Opedal
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • biomass pretreatment
  • waste valorization
  • waste biorefinery
  • industrial waste streams
  • green energy
  • biofuels
  • sustainable solutions

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Published Papers (2 papers)

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Research

17 pages, 1881 KiB  
Article
Mathematical Models and Dynamic Global Warming Potential Calculation for Estimating the Role of Organic Amendment in Net-Zero Goal Achievement
by Raja Chowdhury and Vivek Agarwal
Energies 2024, 17(19), 4819; https://doi.org/10.3390/en17194819 - 26 Sep 2024
Cited by 1 | Viewed by 1186
Abstract
This study aimed to assess the potential of soil organic carbon (SOC) production through organic amendments. SOC sequestration would help to achieve the net-zero emissions targets set by the Intergovernmental Panel on Climate Change (IPCC). Given the urgency to reduce greenhouse gas emissions, [...] Read more.
This study aimed to assess the potential of soil organic carbon (SOC) production through organic amendments. SOC sequestration would help to achieve the net-zero emissions targets set by the Intergovernmental Panel on Climate Change (IPCC). Given the urgency to reduce greenhouse gas emissions, traditional methods that estimate SOC over 100 years must be revised. Hence, a novel fate transport numerical model was developed to forecast SOC levels relevant to individual countries’ net-zero targets in various time frames. The simulation results revealed that most countries had sufficient organic amendment to mitigate the CO2 emission of that country for a year if the organic amendment was applied on 20% of the arable land. However, if a significant fraction of the total CO2 emissions needs to be mitigated before reaching the net zero target, the requirements of organic amendments need to be increased several folds. All the available agricultural land should also be brought under the organic amendment regime. Later, the dynamic LCA approach was undertaken for estimating Global Warming (GWP) from land-applied organic residue. It was observed that, depending on the dynamic LCA model, the estimated GWP was different. However, the estimated dynamic GWP was very close to the residual SOC calculated through the fate transport model. The mass of organic residues generated from a biorefinery was examined by employing a waste biorefinery model to explore further the routes of acquiring additional organic amendment. Simulated results showed that while a waste biorefinery could not provide additional organic residue compared to the original organic waste input, it was highly efficient for nutrient recovery and its uses. This study demonstrated that organic amendment-based carbon sequestration adequately mitigated residual GHG at the net-zero target. Full article
(This article belongs to the Special Issue Emerging Technologies for Waste Biomass to Green Energy and Materials)
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29 pages, 3045 KiB  
Article
Goat Manure Potential as a Substrate for Biomethane Production—An Experiment for Photofermentation
by Jakub T. Hołaj-Krzak, Anita Konieczna, Kinga Borek, Dorota Gryszkiewicz-Zalega, Ewa Sitko, Marek Urbaniak, Barbara Dybek, Dorota Anders, Jan Szymenderski, Adam Koniuszy and Grzegorz Wałowski
Energies 2024, 17(16), 3967; https://doi.org/10.3390/en17163967 - 10 Aug 2024
Cited by 2 | Viewed by 2247
Abstract
This article presents the current state of biogas (biomethane) production technology—an example of the use of goat manure in terms of photofermentation efficiency. The theoretical and experimental potential of biomethane using biodegradability for anaerobic fermentation of goat manure was indicated. Goat manure was [...] Read more.
This article presents the current state of biogas (biomethane) production technology—an example of the use of goat manure in terms of photofermentation efficiency. The theoretical and experimental potential of biomethane using biodegradability for anaerobic fermentation of goat manure was indicated. Goat manure was tested for its elemental composition to determine the suitability of this raw material for biogas production. The quality of biogas produced under atmospheric conditions from goat manure placed in a reactor (photodigester) was assessed. An attempt was made to determine the process conditions for immobilization on a goat manure bed (depending on the research material collected), which allows for demonstrating the activity of the fermentation bacterial flora, thus influencing the amount of biogas (biomethane) produced in the reactor. A mechanism for the photofermentation process involving the production of biomethane was developed. The novelty of this article is the development of the use of goat manure in an innovative way, pointing to the development of the biomethane industry. When comparing goat manure, active group (compact bed), it should be noted that K 3.132%, Na 0.266%, Ca 1.909% and Mg 0.993% are lower values compared to the material with values of K 3.397%, Na 0.284%, Ca 1.813% and Mg 0.990% which are higher. This is undoubtedly due to the presence of nutrients in the deposit that support the biomethane production process. The active group (compact bed) material A shows a dynamic increase in biomethane production with lower nutrient values. However, material B, having a higher percentage of ingredients, shows stabilization of biomethane production after the sixth month of the process. Technological trends and future prospects for the biomethane sector were initiated. Full article
(This article belongs to the Special Issue Emerging Technologies for Waste Biomass to Green Energy and Materials)
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